The National Ambient Air Quality Standards (NAAQS) |
Pollutant |
Sample |
Standard
Value |
Carbon Monoxide (CO) |
8-hour Average 1-hour Average |
9
ppm 10 mg/m3
35 ppm
40 mg/m3 |
Lead (Pb) |
Quarterly Average |
1.5 ug/m3 |
Nitrogen
Dioxide (NO2) |
Annual Arithmetic Mean |
0.053
ppm 100 ug/m3 |
Ozone (O3) |
1-hour Average 8-hour Average |
0.12
ppm 235 ug/m3
0.08 ppm 157 ug/m3 |
Particulate
Matter (PM-10) |
Annual Arithmetic Mean 24-hour Average |
50 ug/m3
150 ug/m3 |
Particulate
Matter (PM-2.5) |
Annual Arithmetic Mean 24-hour Average |
15 ug/m3
65 ug/m3 |
Sulfur
Dioxide (SO2) |
Annual Arithmetic Mean 24-hour Average |
0.03
ppm 80 ug/m3
0.14 ppm 365 ug/m3 |